In a medium pot, heat the extra virgin olive oil over medium heat. When the oil is hot, add the celery, carrot, white onion and garlic. Sauté until the vegetables are translucent.
Add the chicken broth, roasted red pepper, and herbs de provenance. Stir and bring to a boil, then simmer for 10 minutes.
Add the brie and simmer for an additional 10 minutes, stirring often. Then use an immersion blender to puree the soup. Stir in the heavy cream and season to taste with salt.